A low-temperature start-up control method for a fuel cell system
A fuel cell system and fuel cell technology, applied in the direction of fuel cell control, fuel cells, fuel cell additives, etc., can solve the problems of lack of targeted parking control methods, battery membrane electrode damage, and adding auxiliary start-up components, etc.
A fuel cell system and fuel cell technology, applied in the direction of fuel cell control, fuel cells, fuel cell additives, etc., can solve the problems of lack of targeted parking control methods, battery membrane electrode damage, and adding auxiliary start-up components, etc.
CN105406095BActive Publication Date: 2017-09-01SUNRISE POWER CO LTD
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[0029] The present invention will be further described below in conjunction with the accompanying drawings.
[0030] In the following detailed description of specific embodiments, the combination of figure 1 The specific application details and application results of the present invention are described, and those skilled in the art will realize that the application of this technology can be realized in other similar ways within the technical framework described in the present invention.
[0031] The specific implementation of the shutdown and startup of the fuel cell system 1 is as follows:
[0032] Such as figure 1 Shown is a fuel cell system 1 and the electrical load 8 provided by it. The fuel cell system 1 is composed of a fuel cell stack 2, a hydrogen supply subsystem 3, an air supply subsystem 4, and a coolant circulation system 5 , fuel cell single cell voltage inspection 6 and auxiliary control system 7, the fuel cell stack 2 is composed of 100 single cells, adopts me...
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Abstract
The invention discloses a low-temperature start control method for a fuel cell system. The low-temperature start control method comprises parking control and start control. According to the invention, when parking control is carried out, a fuel cell is kept in relatively high reaction gas supply quantity; therefore, a role of blowing is played; residual liquid water in the fuel cell can be removed; simultaneously, the fuel cell is kept in relatively low intermittent loading current; intermittent water supply to a proton exchange membrane of the fuel cell can be carried out, such that the excessive water loss condition of the proton exchange membrane is prevented; when the fuel cell system is started, the fuel cell releases heat to increase the temperature by utilizing self reaction; an extra auxiliary energy is unnecessary to heat; furthermore, loading start is carried out by adopting the starting condition and the current density corresponding to a parking post-treatment process; the low-temperature start process of the fuel cell system can be successfully implemented; due to the invention, the fuel cell can be controlled in a proper state after parking in a low-temperature temperature; and furthermore, the fuel cell system can be rapidly started again in the state in the low-temperature temperature.
Description
technical field [0001] The present invention relates to the technical field of proton exchange membrane fuel cells, and more specifically to a control method for a fuel cell system that can realize low-temperature start-up Background technique [0002] Proton exchange membrane fuel cells (hereinafter referred to as fuel cells) use hydrogen and air (or oxygen) as reaction raw materials, generate product water and release heat in the process of external energy supply. As an efficient and clean energy conversion device, fuel cells are used in vehicle power systems and need to meet the application requirements of adapting to low temperature environments. The fuel cell generates product water during operation, and its proton exchange membrane needs to ensure a certain water content to realize its internal proton conduction process. Therefore, when the fuel cell is applied in a low temperature environment (below 0°C), when it is stopped and restarted, it faces the problem of how ...
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Patent Timeline
01 Sep 2017
Publication
CN105406095B
- IPC
- H01M8/04302; H01M8/04701
- CPC
- H01M8/04298; H01M8/04701; Y02E60/50
- Inventors
- 梁栋; 杜超